/* content组件样式 */
.content {
    display:flex;
    flex-wrap:wrap;
    padding:20px 20px 0 0;
}
.content-item {
    position:relative;
    width:50%;
    padding:0 0 20px 20px;
}
.content-item a {
    display:block;
}
.content-img {
    width:100%;
}
.content-text {
    position:absolute;
    background-color:rgba(0,0,0,.4);
    top:0;
    left:20px;
    right:0;
    bottom:20px;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-size:16px;
}